wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18
  19 #ifdef __WXMSW__
  20 #include <wx/msw/private.h>
  21 #include <wx/msw/winundef.h>
  22 #include <wx/msw/msvcrt.h>
  23 #endif
  24
  25 #ifdef __WXGTK__
  26 #include <gdk/gdk.h>
  27 #include <gdk/gdkx.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkprivate.h>
  30 #include <wx/gtk/win_gtk.h>
  31 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  32                               GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  33                               GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  34 #include <locale.h>
  35 #endif
  36
  37 #ifdef __WXX11__
  38 #include "wx/x11/privx.h"
  39 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  40 #endif
  41
  42 #ifdef __WXMAC__
  43 #include <wx/mac/private.h>
  44 #endif
  45
  46 #include <wx/clipbrd.h>
  47 #include <wx/mimetype.h>
  48 #include <wx/image.h>
  49
  50 //----------------------------------------------------------------------
  51
  52 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  53 #error Python must support Unicode to use wxWindows Unicode
  54 #endif
  55
  56 //----------------------------------------------------------------------
  57
  58 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  59 bool wxPyDoCleanup = false;
  60 bool wxPyDoingCleanup = false;
  61
  62
  63 #ifdef WXP_WITH_THREAD
  64 #if !wxPyUSE_GIL_STATE
  65 struct wxPyThreadState {
  66     unsigned long  tid;
  67     PyThreadState* tstate;
  68
  69     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  70         : tid(_tid), tstate(_tstate) {}
  71 };
  72
  73 #include <wx/dynarray.h>
  74 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  75 #include <wx/arrimpl.cpp>
  76 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  77
  78 wxPyThreadStateArray* wxPyTStates = NULL;
  79 wxMutex*              wxPyTMutex = NULL;
  80
  81 #endif
  82 #endif
  83
  84
  85 #define DEFAULTENCODING_SIZE 64
  86 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  87
  88 static PyObject* wxPython_dict = NULL;
  89 static PyObject* wxPyAssertionError = NULL;
  90 static PyObject* wxPyNoAppError = NULL;
  91
  92 PyObject* wxPyPtrTypeMap = NULL;
  93
  94
  95 #ifdef __WXMSW__             // If building for win32...
  96 //----------------------------------------------------------------------
  97 // This gets run when the DLL is loaded.  We just need to save a handle.
  98 //----------------------------------------------------------------------
  99
 100 extern "C"
 101 BOOL WINAPI DllMain(
 102     HINSTANCE   hinstDLL,    // handle to DLL module
 103     DWORD       fdwReason,   // reason for calling function
 104     LPVOID      lpvReserved  // reserved
 105    )
 106 {
 107     // If wxPython is embedded in another wxWidgets app then
 108     // the instance has already been set.
 109     if (! wxGetInstance())
 110         wxSetInstance(hinstDLL);
 111     return true;
 112 }
 113 #endif
 114
 115 //----------------------------------------------------------------------
 116 // Classes for implementing the wxp main application shell.
 117 //----------------------------------------------------------------------
 118
 119 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 120
 121
 122 wxPyApp::wxPyApp() {
 123     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 124     m_startupComplete = false;
 125 }
 126
 127
 128 wxPyApp::~wxPyApp() {
 129     wxPythonApp = NULL;
 130     wxApp::SetInstance(NULL);
 131 }
 132
 133
 134 // This one isn't acutally called...  We fake it with _BootstrapApp
 135 bool wxPyApp::OnInit() {
 136     return false;
 137 }
 138
 139
 140 int  wxPyApp::MainLoop() {
 141     int retval = 0;
 142
 143     DeletePendingObjects();
 144     bool initialized = wxTopLevelWindows.GetCount() != 0;
 145     if (initialized) {
 146         if ( m_exitOnFrameDelete == Later ) {
 147             m_exitOnFrameDelete = Yes;
 148         }
 149
 150         retval = wxApp::MainLoop();
 151         OnExit();
 152     }
 153     return retval;
 154 }
 155
 156
 157 bool wxPyApp::OnInitGui() {
 158     bool rval=true;
 159     wxApp::OnInitGui();  // in this case always call the base class version
 160     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 161     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 162         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 163     wxPyEndBlockThreads(blocked);
 164     return rval;
 165 }
 166
 167
 168 int wxPyApp::OnExit() {
 169     int rval=0;
 170     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 171     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 172         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 173     wxPyEndBlockThreads(blocked);
 174     wxApp::OnExit();  // in this case always call the base class version
 175     return rval;
 176 }
 177
 178
 179 #ifdef __WXDEBUG__
 180 void wxPyApp::OnAssert(const wxChar *file,
 181                      int line,
 182                      const wxChar *cond,
 183                      const wxChar *msg) {
 184
 185     // if we're not fully initialized then just log the error
 186     if (! m_startupComplete) {
 187         wxString buf;
 188         buf.Alloc(4096);
 189         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 190                    file, line, cond);
 191         if (msg != NULL) {
 192             buf += wxT(": ");
 193             buf += msg;
 194         }
 195         wxLogDebug(buf);
 196         return;
 197     }
 198
 199     // If the OnAssert is overloaded in the Python class then call it...
 200     bool found;
 201     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 202     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 203         PyObject* fso = wx2PyString(file);
 204         PyObject* cso = wx2PyString(file);
 205         PyObject* mso;
 206         if (msg != NULL)
 207             mso = wx2PyString(file);
 208         else {
 209             mso = Py_None; Py_INCREF(Py_None);
 210         }
 211         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 212         Py_DECREF(fso);
 213         Py_DECREF(cso);
 214         Py_DECREF(mso);
 215     }
 216     wxPyEndBlockThreads(blocked);
 217
 218     // ...otherwise do our own thing with it
 219     if (! found) {
 220         // ignore it?
 221         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 222             return;
 223
 224         // turn it into a Python exception?
 225         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 226             wxString buf;
 227             buf.Alloc(4096);
 228             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 229             if (msg != NULL) {
 230                 buf += wxT(": ");
 231                 buf += msg;
 232             }
 233
 234             // set the exception
 235             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 236             PyObject* s = wx2PyString(buf);
 237             PyErr_SetObject(wxPyAssertionError, s);
 238             Py_DECREF(s);
 239             wxPyEndBlockThreads(blocked);
 240
 241             // Now when control returns to whatever API wrapper was called from
 242             // Python it should detect that an exception is set and will return
 243             // NULL, signalling the exception to Python.
 244         }
 245
 246         // Send it to the normal log destination, but only if
 247         // not _DIALOG because it will call this too
 248         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 249             wxString buf;
 250             buf.Alloc(4096);
 251             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 252                        file, line, cond);
 253             if (msg != NULL) {
 254                 buf += wxT(": ");
 255                 buf += msg;
 256             }
 257             wxLogDebug(buf);
 258         }
 259
 260         // do the normal wx assert dialog?
 261         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 262             wxApp::OnAssert(file, line, cond, msg);
 263     }
 264 }
 265 #endif
 266
 267     // For catching Apple Events
 268 void wxPyApp::MacOpenFile(const wxString &fileName)
 269 {
 270     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 271     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 272         PyObject* s = wx2PyString(fileName);
 273         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 274         Py_DECREF(s);
 275     }
 276     wxPyEndBlockThreads(blocked);
 277 }
 278
 279 void wxPyApp::MacPrintFile(const wxString &fileName)
 280 {
 281     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 282     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 283         PyObject* s = wx2PyString(fileName);
 284         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 285         Py_DECREF(s);
 286     }
 287     wxPyEndBlockThreads(blocked);
 288 }
 289
 290 void wxPyApp::MacNewFile()
 291 {
 292     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 293     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 294         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 295     wxPyEndBlockThreads(blocked);
 296 }
 297
 298 void wxPyApp::MacReopenApp()
 299 {
 300     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 301     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 302         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 303     wxPyEndBlockThreads(blocked);
 304 }
 305
 306
 307 /*static*/
 308 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 309 #ifdef __WXMAC__
 310     return s_macSupportPCMenuShortcuts;
 311 #else
 312     return 0;
 313 #endif
 314 }
 315
 316 /*static*/
 317 long wxPyApp::GetMacAboutMenuItemId() {
 318 #ifdef __WXMAC__
 319     return s_macAboutMenuItemId;
 320 #else
 321     return 0;
 322 #endif
 323 }
 324
 325 /*static*/
 326 long wxPyApp::GetMacPreferencesMenuItemId() {
 327 #ifdef __WXMAC__
 328     return s_macPreferencesMenuItemId;
 329 #else
 330     return 0;
 331 #endif
 332 }
 333
 334 /*static*/
 335 long wxPyApp::GetMacExitMenuItemId() {
 336 #ifdef __WXMAC__
 337     return s_macExitMenuItemId;
 338 #else
 339     return 0;
 340 #endif
 341 }
 342
 343 /*static*/
 344 wxString wxPyApp::GetMacHelpMenuTitleName() {
 345 #ifdef __WXMAC__
 346     return s_macHelpMenuTitleName;
 347 #else
 348     return wxEmptyString;
 349 #endif
 350 }
 351
 352 /*static*/
 353 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 354 #ifdef __WXMAC__
 355     s_macSupportPCMenuShortcuts = val;
 356 #endif
 357 }
 358
 359 /*static*/
 360 void wxPyApp::SetMacAboutMenuItemId(long val) {
 361 #ifdef __WXMAC__
 362     s_macAboutMenuItemId = val;
 363 #endif
 364 }
 365
 366 /*static*/
 367 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 368 #ifdef __WXMAC__
 369     s_macPreferencesMenuItemId = val;
 370 #endif
 371 }
 372
 373 /*static*/
 374 void wxPyApp::SetMacExitMenuItemId(long val) {
 375 #ifdef __WXMAC__
 376     s_macExitMenuItemId = val;
 377 #endif
 378 }
 379
 380 /*static*/
 381 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 382 #ifdef __WXMAC__
 383     s_macHelpMenuTitleName = val;
 384 #endif
 385 }
 386
 387
 388 // This finishes the initialization of wxWindows and then calls the OnInit
 389 // that should be present in the derived (Python) class.
 390 void wxPyApp::_BootstrapApp()
 391 {
 392     static      bool haveInitialized = false;
 393     bool        result;
 394     wxPyBlock_t     blocked;
 395     PyObject*   retval = NULL;
 396     PyObject*   pyint  = NULL;
 397
 398
 399     // Only initialize wxWidgets once
 400     if (! haveInitialized) {
 401
 402         // Get any command-line args passed to this program from the sys module
 403         int    argc = 0;
 404         char** argv = NULL;
 405         blocked = wxPyBeginBlockThreads();
 406
 407         PyObject* sysargv = PySys_GetObject("argv");
 408         PyObject* executable = PySys_GetObject("executable");
 409
 410         if (sysargv != NULL && executable != NULL) {
 411             argc = PyList_Size(sysargv) + 1;
 412             argv = new char*[argc+1];
 413             argv[0] = strdup(PyString_AsString(executable));
 414             int x;
 415             for(x=1; x<argc; x++) {
 416                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 417                 argv[x] = strdup(PyString_AsString(pyArg));
 418             }
 419             argv[argc] = NULL;
 420         }
 421         wxPyEndBlockThreads(blocked);
 422
 423         // Initialize wxWidgets
 424         result = wxEntryStart(argc, argv);
 425         // wxApp takes ownership of the argv array, don't delete it here
 426
 427         blocked = wxPyBeginBlockThreads();
 428         if (! result)  {
 429             PyErr_SetString(PyExc_SystemError,
 430                             "wxEntryStart failed, unable to initialize wxWidgets!"
 431 #ifdef __WXGTK__
 432                             "  (Is DISPLAY set properly?)"
 433 #endif
 434                 );
 435             goto error;
 436         }
 437
 438         // On wxGTK the locale will be changed to match the system settings,
 439         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 440         // for the floating point conversions and such to work right.
 441 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 442         setlocale(LC_NUMERIC, "C");
 443 #endif
 444
 445         wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 446
 447         // The stock objects were all NULL when they were loaded into
 448         // SWIG generated proxies, so re-init those now...
 449         wxPy_ReinitStockObjects(3);
 450
 451         wxPyEndBlockThreads(blocked);
 452         haveInitialized = true;
 453     }
 454     else {
 455         this->argc = 0;
 456         this->argv = NULL;
 457     }
 458
 459
 460     // It's now ok to generate exceptions for assertion errors.
 461     wxPythonApp->SetStartupComplete(true);
 462
 463     // Call the Python wxApp's OnInit function
 464     blocked = wxPyBeginBlockThreads();
 465     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 466
 467         PyObject* method = m_myInst.GetLastFound();
 468         PyObject* argTuple = PyTuple_New(0);
 469         retval = PyEval_CallObject(method, argTuple);
 470         Py_DECREF(argTuple);
 471         Py_DECREF(method);
 472         if (retval == NULL)
 473             goto error;
 474
 475         pyint = PyNumber_Int(retval);
 476         if (! pyint) {
 477             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 478             goto error;
 479         }
 480         result = PyInt_AS_LONG(pyint);
 481     }
 482     else {
 483         // Is it okay if there is no OnInit?  Probably so...
 484         result = true;
 485     }
 486
 487     if (! result) {
 488         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 489     }
 490
 491  error:
 492     Py_XDECREF(retval);
 493     Py_XDECREF(pyint);
 494
 495     wxPyEndBlockThreads(blocked);
 496 };
 497
 498 //---------------------------------------------------------------------
 499 //----------------------------------------------------------------------
 500
 501
 502 #if 0
 503 static char* wxPyCopyCString(const wxChar* src)
 504 {
 505     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 506     size_t len = strlen(buff);
 507     char*  dest = new char[len+1];
 508     strcpy(dest, buff);
 509     return dest;
 510 }
 511
 512 #if wxUSE_UNICODE
 513 static char* wxPyCopyCString(const char* src)   // we need a char version too
 514 {
 515     size_t len = strlen(src);
 516     char*  dest = new char[len+1];
 517     strcpy(dest, src);
 518     return dest;
 519 }
 520 #endif
 521
 522 static wxChar* wxPyCopyWString(const char *src)
 523 {
 524     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 525     wxString str(src, *wxConvCurrent);
 526     return copystring(str);
 527 }
 528
 529 #if wxUSE_UNICODE
 530 static wxChar* wxPyCopyWString(const wxChar *src)
 531 {
 532     return copystring(src);
 533 }
 534 #endif
 535 #endif
 536
 537
 538 inline const char* dropwx(const char* name) {
 539     if (name[0] == 'w' && name[1] == 'x')
 540         return name+2;
 541     else
 542         return name;
 543 }
 544
 545 //----------------------------------------------------------------------
 546
 547 // This function is called when the wx._core_ module is imported to do some
 548 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 549 // wxPyApp::_BootstrapApp
 550 void __wxPyPreStart(PyObject* moduleDict)
 551 {
 552
 553 #ifdef __WXMSW__
 554 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 555 //                     | _CRTDBG_CHECK_ALWAYS_DF
 556 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 557 //         );
 558 #endif
 559
 560 #ifdef WXP_WITH_THREAD
 561 #if wxPyUSE_GIL_STATE
 562     PyEval_InitThreads();
 563 #else
 564     PyEval_InitThreads();
 565     wxPyTStates = new wxPyThreadStateArray;
 566     wxPyTMutex = new wxMutex;
 567
 568     // Save the current (main) thread state in our array
 569     PyThreadState* tstate = wxPyBeginAllowThreads();
 570     wxPyEndAllowThreads(tstate);
 571 #endif
 572 #endif
 573
 574     // Ensure that the build options in the DLL (or whatever) match this build
 575     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 576
 577     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 578     wxPy_ReinitStockObjects(1);
 579
 580     wxInitAllImageHandlers();
 581 }
 582
 583
 584
 585 void __wxPyCleanup() {
 586     wxPyDoingCleanup = true;
 587     if (wxPyDoCleanup) {
 588         wxPyDoCleanup = false;
 589         wxEntryCleanup();
 590     }
 591 #ifdef WXP_WITH_THREAD
 592 #if !wxPyUSE_GIL_STATE
 593     delete wxPyTMutex;
 594     wxPyTMutex = NULL;
 595     wxPyTStates->Empty();
 596     delete wxPyTStates;
 597     wxPyTStates = NULL;
 598 #endif
 599 #endif
 600 }
 601
 602
 603 // Save a reference to the dictionary of the wx._core module, and inject
 604 // a few more things into it.
 605 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 606 {
 607
 608     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 609         return NULL;
 610
 611     if (!PyDict_Check(wxPython_dict)) {
 612         PyErr_SetString(PyExc_TypeError,
 613                         "_wxPySetDictionary must have dictionary object!");
 614         return NULL;
 615     }
 616
 617     if (! wxPyPtrTypeMap)
 618         wxPyPtrTypeMap = PyDict_New();
 619     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 620
 621     // Create an exception object to use for wxASSERTions
 622     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 623                                             PyExc_AssertionError, NULL);
 624     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 625
 626     // Create an exception object to use when the app object hasn't been created yet
 627     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 628                                         PyExc_RuntimeError, NULL);
 629     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 630
 631
 632
 633 #ifdef __WXMOTIF__
 634 #define wxPlatform "__WXMOTIF__"
 635 #define wxPlatName "wxMotif"
 636 #endif
 637 #ifdef __WXX11__
 638 #define wxPlatform "__WXX11__"
 639 #define wxPlatName "wxX11"
 640 #endif
 641 #ifdef __WXGTK__
 642 #define wxPlatform "__WXGTK__"
 643 #define wxPlatName "wxGTK"
 644 #endif
 645 #ifdef __WXMSW__
 646 #define wxPlatform "__WXMSW__"
 647 #define wxPlatName "wxMSW"
 648 #endif
 649 #ifdef __WXMAC__
 650 #define wxPlatform "__WXMAC__"
 651 #define wxPlatName "wxMac"
 652 #endif
 653
 654 #ifdef __WXDEBUG__
 655     int wxdebug = 1;
 656 #else
 657     int wxdebug = 0;
 658 #endif
 659
 660     // These should be deprecated in favor of the PlatformInfo tuple built below...
 661     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 662     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 663     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 664
 665     // Make a tuple of strings that gives more info about the platform.
 666     PyObject* PlatInfo = PyList_New(0);
 667     PyObject* obj;
 668
 669 #define _AddInfoString(st) \
 670     obj = PyString_FromString(st); \
 671     PyList_Append(PlatInfo, obj); \
 672     Py_DECREF(obj)
 673
 674     _AddInfoString(wxPlatform);
 675     _AddInfoString(wxPlatName);
 676 #if wxUSE_UNICODE
 677     _AddInfoString("unicode");
 678 #else
 679     _AddInfoString("ansi");
 680 #endif
 681 #ifdef __WXGTK__
 682 #ifdef __WXGTK20__
 683     _AddInfoString("gtk2");
 684 #else
 685     _AddInfoString("gtk1");
 686 #endif
 687 #endif
 688 #ifdef __WXDEBUG__
 689     _AddInfoString("wx-assertions-on");
 690 #else
 691     _AddInfoString("wx-assertions-off");
 692 #endif
 693
 694 #undef _AddInfoString
 695
 696     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 697     Py_DECREF(PlatInfo);
 698     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 699
 700     RETURN_NONE();
 701 }
 702
 703
 704 //---------------------------------------------------------------------------
 705
 706 // Python's PyInstance_Check does not return True for instances of new-style
 707 // classes.  This should get close enough for both new and old classes but I
 708 // should re-evaluate the need for doing instance checks...
 709 bool wxPyInstance_Check(PyObject* obj) {
 710     return PyObject_HasAttrString(obj, "__class__") != 0;
 711 }
 712
 713
 714 // This one checks if the object is an instance of a SWIG proxy class (it has
 715 // a .this attribute)
 716 bool wxPySwigInstance_Check(PyObject* obj) {
 717     return PyObject_HasAttrString(obj, "this") != 0;
 718 }
 719
 720 //---------------------------------------------------------------------------
 721
 722 // The stock objects are no longer created when the wx._core_ module is
 723 // imported, but only after the app object has been created.  The
 724 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 725 // objects though various stages of evolution:
 726 //
 727 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 728 //           object will be created (otherwise SWIG will just use None.)
 729 //
 730 //   pass 2: After the module has been imported and the python proxys have
 731 //           been created, then set the __class__ to be _wxPyUnbornObject so
 732 //           it will catch any access to the object and will raise an exception.
 733 //
 734 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 735 //           can be used.
 736
 737
 738 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 739 {
 740     wxPy_ReinitStockObjects(2);
 741     RETURN_NONE();
 742 }
 743
 744
 745 static void rsoPass2(const char* name)
 746 {
 747     static PyObject* unbornObjectClass = NULL;
 748     PyObject* obj;
 749
 750     if (unbornObjectClass == NULL) {
 751         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 752         Py_INCREF(unbornObjectClass);
 753     }
 754
 755     // Find the object instance
 756     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 757     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 758     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 759
 760     // Change its class
 761     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 762
 763 }
 764
 765 static void rsoPass3(const char* name, const char* classname, void* ptr)
 766 {
 767     PyObject* obj;
 768     PyObject* classobj;
 769     PyObject* ptrobj;
 770
 771     // Find the object instance
 772     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 773     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 774     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 775
 776     // Find the class object and put it back in the instance
 777     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 778     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 779     PyObject_SetAttrString(obj, "__class__",  classobj);
 780
 781     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 782     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 783     PyObject_SetAttrString(obj, "this", ptrobj);
 784     Py_DECREF(ptrobj);
 785 }
 786
 787
 788
 789 void wxPy_ReinitStockObjects(int pass)
 790 {
 791
 792     // If there is already an App object then wxPython is probably embedded in
 793     // a wx C++ application, so there is no need to do all this.
 794     static bool embedded = false;
 795     if ((pass == 1 || pass == 2) && wxTheApp) {
 796         embedded = true;
 797         return;
 798     }
 799     if (pass == 3 && embedded)
 800         return;
 801
 802
 803 #define REINITOBJ(name, classname) \
 804     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 805     else if (pass == 2) { rsoPass2(#name); } \
 806     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 807
 808
 809 #define REINITOBJ2(name, classname) \
 810     if (pass == 1) { } \
 811     else if (pass == 2) { rsoPass2(#name); } \
 812     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 813
 814
 815     REINITOBJ(wxNORMAL_FONT, wxFont);
 816     REINITOBJ(wxSMALL_FONT, wxFont);
 817     REINITOBJ(wxITALIC_FONT, wxFont);
 818     REINITOBJ(wxSWISS_FONT, wxFont);
 819
 820     REINITOBJ(wxRED_PEN, wxPen);
 821     REINITOBJ(wxCYAN_PEN, wxPen);
 822     REINITOBJ(wxGREEN_PEN, wxPen);
 823     REINITOBJ(wxBLACK_PEN, wxPen);
 824     REINITOBJ(wxWHITE_PEN, wxPen);
 825     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 826     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 827     REINITOBJ(wxGREY_PEN, wxPen);
 828     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 829     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 830
 831     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 832     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 833     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 834     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 835     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 836     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 837     REINITOBJ(wxRED_BRUSH, wxBrush);
 838     REINITOBJ(wxGREY_BRUSH, wxBrush);
 839     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 840     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 841
 842     REINITOBJ(wxBLACK, wxColour);
 843     REINITOBJ(wxWHITE, wxColour);
 844     REINITOBJ(wxRED, wxColour);
 845     REINITOBJ(wxBLUE, wxColour);
 846     REINITOBJ(wxGREEN, wxColour);
 847     REINITOBJ(wxCYAN, wxColour);
 848     REINITOBJ(wxLIGHT_GREY, wxColour);
 849
 850     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 851     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 852     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 853
 854     REINITOBJ2(wxNullBitmap, wxBitmap);
 855     REINITOBJ2(wxNullIcon, wxIcon);
 856     REINITOBJ2(wxNullCursor, wxCursor);
 857     REINITOBJ2(wxNullPen, wxPen);
 858     REINITOBJ2(wxNullBrush, wxBrush);
 859     REINITOBJ2(wxNullPalette, wxPalette);
 860     REINITOBJ2(wxNullFont, wxFont);
 861     REINITOBJ2(wxNullColour, wxColour);
 862
 863     REINITOBJ(wxTheFontList, wxFontList);
 864     REINITOBJ(wxThePenList, wxPenList);
 865     REINITOBJ(wxTheBrushList, wxBrushList);
 866     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 867
 868
 869     REINITOBJ2(wxDefaultValidator, wxValidator);
 870     REINITOBJ2(wxNullImage, wxImage);
 871     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 872
 873 #undef REINITOBJ
 874 #undef REINITOBJ2
 875 }
 876
 877 //---------------------------------------------------------------------------
 878
 879 // Check for existence of a wxApp, setting an exception if there isn't one.
 880 // This doesn't need to aquire the GIL because it should only be called from
 881 // an %exception before the lock is released.
 882
 883 bool wxPyCheckForApp() {
 884     if (wxTheApp != NULL)
 885         return true;
 886     else {
 887         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 888         return false;
 889     }
 890 }
 891
 892 //---------------------------------------------------------------------------
 893
 894 void wxPyUserData_dtor(wxPyUserData* self) {
 895     if (! wxPyDoingCleanup) {
 896         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 897         Py_DECREF(self->m_obj);
 898         self->m_obj = NULL;
 899         wxPyEndBlockThreads(blocked);
 900     }
 901 }
 902
 903
 904 void wxPyClientData_dtor(wxPyClientData* self) {
 905     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 906                                         // may have already garbage collected the object...
 907         if (self->m_incRef) {
 908             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 909             Py_DECREF(self->m_obj);
 910             wxPyEndBlockThreads(blocked);
 911         }
 912         self->m_obj = NULL;
 913     }
 914 }
 915
 916
 917
 918 // This is called when an OOR controled object is being destroyed.  Although
 919 // the C++ object is going away there is no way to force the Python object
 920 // (and all references to it) to die too.  This causes problems (crashes) in
 921 // wxPython when a python shadow object attempts to call a C++ method using
 922 // the now bogus pointer... So to try and prevent this we'll do a little black
 923 // magic and change the class of the python instance to a class that will
 924 // raise an exception for any attempt to call methods with it.  See
 925 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 926 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 927
 928     static PyObject* deadObjectClass = NULL;
 929
 930     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 931     if (deadObjectClass == NULL) {
 932         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 933         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 934         // will lead to a deadlock when it tries to aquire the GIL again.
 935         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 936         Py_INCREF(deadObjectClass);
 937     }
 938
 939
 940     // Only if there is more than one reference to the object and we are
 941     // holding the OOR reference:
 942     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 943         // bool isInstance = wxPyInstance_Check(self->m_obj);
 944         // TODO same here
 945         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 946
 947         // Call __del__, if there is one.
 948         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 949         if (func) {
 950             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 951             Py_XDECREF(rv);
 952             Py_DECREF(func);
 953         }
 954         if (PyErr_Occurred())
 955             PyErr_Clear();      // just ignore it for now
 956
 957
 958         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 959         if (dict) {
 960             // Clear the instance's dictionary
 961             PyDict_Clear(dict);
 962
 963             // put the name of the old class into the instance, and then reset the
 964             // class to be the dead class.
 965             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 966             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 967             PyDict_SetItemString(dict, "_name", name);
 968             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 969             //Py_INCREF(deadObjectClass);
 970             Py_DECREF(klass);
 971             Py_DECREF(name);
 972         }
 973     }
 974
 975     // m_obj is DECREF'd in the base class dtor...
 976     wxPyEndBlockThreads(blocked);
 977 }
 978
 979
 980 //---------------------------------------------------------------------------
 981 // Stuff used by OOR to find the right wxPython class type to return and to
 982 // build it.
 983
 984
 985 // The pointer type map is used when the "pointer" type name generated by SWIG
 986 // is not the same as the shadow class name, for example wxPyTreeCtrl
 987 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 988 // so we'll just make it a Python dictionary in the wx module's namespace.
 989 // (See __wxSetDictionary)
 990 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 991     if (! wxPyPtrTypeMap)
 992         wxPyPtrTypeMap = PyDict_New();
 993     PyDict_SetItemString(wxPyPtrTypeMap,
 994                          (char*)commonName,
 995                          PyString_FromString((char*)ptrName));
 996 }
 997
 998
 999
1000
1001 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
1002     PyObject* target = NULL;
1003     bool      isEvtHandler = false;
1004     bool      isSizer = false;
1005
1006     if (source) {
1007         // If it's derived from wxEvtHandler then there may
1008         // already be a pointer to a Python object that we can use
1009         // in the OOR data.
1010         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
1011             isEvtHandler = true;
1012             wxEvtHandler* eh = (wxEvtHandler*)source;
1013             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
1014             if (data) {
1015                 target = data->m_obj;
1016                 if (target)
1017                     Py_INCREF(target);
1018             }
1019         }
1020
1021         // Also check for wxSizer
1022         if (!target && wxIsKindOf(source, wxSizer)) {
1023             isSizer = true;
1024             wxSizer* sz = (wxSizer*)source;
1025             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1026             if (data) {
1027                 target = data->m_obj;
1028                 if (target)
1029                     Py_INCREF(target);
1030             }
1031         }
1032
1033         if (! target) {
1034             // Otherwise make it the old fashioned way by making a new shadow
1035             // object and putting this pointer in it.  Look up the class
1036             // heirarchy until we find a class name that is located in the
1037             // python module.
1038             const wxClassInfo* info   = source->GetClassInfo();
1039             wxString           name   = info->GetClassName();
1040             bool               exists = wxPyCheckSwigType(name);
1041             while (info && !exists) {
1042                 info = info->GetBaseClass1();
1043                 name = info->GetClassName();
1044                 exists = wxPyCheckSwigType(name);
1045             }
1046             if (info) {
1047                 target = wxPyConstructObject((void*)source, name, setThisOwn);
1048                 if (target && isEvtHandler)
1049                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
1050                 if (target && isSizer)
1051                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1052             } else {
1053                 wxString msg(wxT("wxPython class not found for "));
1054                 msg += source->GetClassInfo()->GetClassName();
1055                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
1056                 target = NULL;
1057             }
1058         }
1059     } else {  // source was NULL so return None.
1060         Py_INCREF(Py_None); target = Py_None;
1061     }
1062     return target;
1063 }
1064
1065
1066 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
1067
1068     return wxPyMake_wxObject(source, setThisOwn);
1069 }
1070
1071
1072 //---------------------------------------------------------------------------
1073
1074
1075 #ifdef WXP_WITH_THREAD
1076 #if !wxPyUSE_GIL_STATE
1077
1078 inline
1079 unsigned long wxPyGetCurrentThreadId() {
1080     return wxThread::GetCurrentId();
1081 }
1082
1083 static wxPyThreadState gs_shutdownTState;
1084
1085 static
1086 wxPyThreadState* wxPyGetThreadState() {
1087     if (wxPyTMutex == NULL) // Python is shutting down...
1088         return &gs_shutdownTState;
1089
1090     unsigned long ctid = wxPyGetCurrentThreadId();
1091     wxPyThreadState* tstate = NULL;
1092
1093     wxPyTMutex->Lock();
1094     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1095         wxPyThreadState& info = wxPyTStates->Item(i);
1096         if (info.tid == ctid) {
1097             tstate = &info;
1098             break;
1099         }
1100     }
1101     wxPyTMutex->Unlock();
1102     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1103     return tstate;
1104 }
1105
1106
1107 static
1108 void wxPySaveThreadState(PyThreadState* tstate) {
1109     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1110         gs_shutdownTState.tstate = tstate;
1111         return;
1112     }
1113     unsigned long ctid = wxPyGetCurrentThreadId();
1114     wxPyTMutex->Lock();
1115     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1116         wxPyThreadState& info = wxPyTStates->Item(i);
1117         if (info.tid == ctid) {
1118 #if 0
1119             if (info.tstate != tstate)
1120                 wxLogMessage("*** tstate mismatch!???");
1121 #endif
1122             info.tstate = tstate;    // allow for transient tstates
1123             // Normally it will never change, but apparently COM callbacks
1124             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1125             // tstate which will then be garbage the next time we try to use
1126             // it...
1127
1128             wxPyTMutex->Unlock();
1129             return;
1130         }
1131     }
1132     // not found, so add it...
1133     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1134     wxPyTMutex->Unlock();
1135 }
1136
1137 #endif
1138 #endif
1139
1140
1141
1142 // Calls from Python to wxWindows code are wrapped in calls to these
1143 // functions:
1144
1145 PyThreadState* wxPyBeginAllowThreads() {
1146 #ifdef WXP_WITH_THREAD
1147     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1148 #if !wxPyUSE_GIL_STATE
1149     wxPySaveThreadState(saved);
1150 #endif
1151     return saved;
1152 #else
1153     return NULL;
1154 #endif
1155 }
1156
1157 void wxPyEndAllowThreads(PyThreadState* saved) {
1158 #ifdef WXP_WITH_THREAD
1159     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1160 #endif
1161 }
1162
1163
1164
1165 // Calls from wxWindows back to Python code, or even any PyObject
1166 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1167
1168 wxPyBlock_t wxPyBeginBlockThreads() {
1169 #ifdef WXP_WITH_THREAD
1170 #if wxPyUSE_GIL_STATE
1171     PyGILState_STATE state = PyGILState_Ensure();
1172     return state;
1173 #else
1174     PyThreadState *current = _PyThreadState_Current;
1175
1176     // Only block if there wasn't already a tstate, or if the current one is
1177     // not the one we are wanting to change to.  This should prevent deadlock
1178     // if there are nested calls to wxPyBeginBlockThreads
1179     wxPyBlock_t blocked = false;
1180     wxPyThreadState* tstate = wxPyGetThreadState();
1181     if (current != tstate->tstate) {
1182         PyEval_RestoreThread(tstate->tstate);
1183         blocked = true;
1184     }
1185     return blocked;
1186 #endif
1187 #else
1188     return (wxPyBlock_t)0;
1189 #endif
1190 }
1191
1192
1193 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1194 #ifdef WXP_WITH_THREAD
1195 #if wxPyUSE_GIL_STATE
1196     PyGILState_Release(blocked);
1197 #else
1198     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1199     // The value of blocked passed in needs to be the same as that returned
1200     // from wxPyBeginBlockThreads at the same nesting level.
1201     if ( blocked ) {
1202         PyEval_SaveThread();
1203     }
1204 #endif
1205 #endif
1206 }
1207
1208
1209 //---------------------------------------------------------------------------
1210 // wxPyInputStream and wxPyCBInputStream methods
1211
1212
1213 void wxPyInputStream::close() {
1214     /* do nothing for now */
1215 }
1216
1217 void wxPyInputStream::flush() {
1218     /* do nothing for now */
1219 }
1220
1221 bool wxPyInputStream::eof() {
1222     if (m_wxis)
1223         return m_wxis->Eof();
1224     else
1225         return true;
1226 }
1227
1228 wxPyInputStream::~wxPyInputStream() {
1229     if (m_wxis)
1230         delete m_wxis;
1231 }
1232
1233
1234
1235
1236 PyObject* wxPyInputStream::read(int size) {
1237     PyObject* obj = NULL;
1238     wxMemoryBuffer buf;
1239     const int BUFSIZE = 1024;
1240
1241     // check if we have a real wxInputStream to work with
1242     if (!m_wxis) {
1243         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1244         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1245         wxPyEndBlockThreads(blocked);
1246         return NULL;
1247     }
1248
1249     if (size < 0) {
1250         // read while bytes are available on the stream
1251         while ( m_wxis->CanRead() ) {
1252             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1253             buf.UngetAppendBuf(m_wxis->LastRead());
1254         }
1255
1256     } else {  // Read only size number of characters
1257         m_wxis->Read(buf.GetWriteBuf(size), size);
1258         buf.UngetWriteBuf(m_wxis->LastRead());
1259     }
1260
1261     // error check
1262     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1263     wxStreamError err = m_wxis->GetLastError();
1264     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1265         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1266     }
1267     else {
1268         // We use only strings for the streams, not unicode
1269         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1270     }
1271     wxPyEndBlockThreads(blocked);
1272     return obj;
1273 }
1274
1275
1276 PyObject* wxPyInputStream::readline(int size) {
1277     PyObject* obj = NULL;
1278     wxMemoryBuffer buf;
1279     int i;
1280     char ch;
1281
1282     // check if we have a real wxInputStream to work with
1283     if (!m_wxis) {
1284         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1285         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1286         wxPyEndBlockThreads(blocked);
1287         return NULL;
1288     }
1289
1290     // read until \n or byte limit reached
1291     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1292         ch = m_wxis->GetC();
1293         buf.AppendByte(ch);
1294     }
1295
1296     // errorcheck
1297     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1298     wxStreamError err = m_wxis->GetLastError();
1299     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1300         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1301     }
1302     else {
1303         // We use only strings for the streams, not unicode
1304         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1305     }
1306     wxPyEndBlockThreads(blocked);
1307     return obj;
1308 }
1309
1310
1311 PyObject* wxPyInputStream::readlines(int sizehint) {
1312     PyObject* pylist;
1313
1314     // check if we have a real wxInputStream to work with
1315     if (!m_wxis) {
1316         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1317         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1318         wxPyEndBlockThreads(blocked);
1319         return NULL;
1320     }
1321
1322     // init list
1323     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1324     pylist = PyList_New(0);
1325     wxPyEndBlockThreads(blocked);
1326
1327     if (!pylist) {
1328         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1329         PyErr_NoMemory();
1330         wxPyEndBlockThreads(blocked);
1331         return NULL;
1332     }
1333
1334     // read sizehint bytes or until EOF
1335     int i;
1336     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1337         PyObject* s = this->readline();
1338         if (s == NULL) {
1339             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1340             Py_DECREF(pylist);
1341             wxPyEndBlockThreads(blocked);
1342             return NULL;
1343         }
1344         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1345         PyList_Append(pylist, s);
1346         i += PyString_Size(s);
1347         wxPyEndBlockThreads(blocked);
1348     }
1349
1350     // error check
1351     wxStreamError err = m_wxis->GetLastError();
1352     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1353         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1354         Py_DECREF(pylist);
1355         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1356         wxPyEndBlockThreads(blocked);
1357         return NULL;
1358     }
1359
1360     return pylist;
1361 }
1362
1363
1364 void wxPyInputStream::seek(int offset, int whence) {
1365     if (m_wxis)
1366         m_wxis->SeekI(offset, wxSeekMode(whence));
1367 }
1368
1369 int wxPyInputStream::tell(){
1370     if (m_wxis)
1371         return m_wxis->TellI();
1372     else return 0;
1373 }
1374
1375
1376
1377
1378 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1379     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1380 {}
1381
1382 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1383 {
1384     m_read  = other.m_read;
1385     m_seek  = other.m_seek;
1386     m_tell  = other.m_tell;
1387     m_block = other.m_block;
1388     Py_INCREF(m_read);
1389     Py_INCREF(m_seek);
1390     Py_INCREF(m_tell);
1391 }
1392
1393
1394 wxPyCBInputStream::~wxPyCBInputStream() {
1395     wxPyBlock_t blocked;
1396     if (m_block) blocked = wxPyBeginBlockThreads();
1397     Py_XDECREF(m_read);
1398     Py_XDECREF(m_seek);
1399     Py_XDECREF(m_tell);
1400     if (m_block) wxPyEndBlockThreads(blocked);
1401 }
1402
1403
1404 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1405     wxPyBlock_t blocked;
1406     if (block) blocked = wxPyBeginBlockThreads();
1407
1408     PyObject* read = getMethod(py, "read");
1409     PyObject* seek = getMethod(py, "seek");
1410     PyObject* tell = getMethod(py, "tell");
1411
1412     if (!read) {
1413         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1414         Py_XDECREF(read);
1415         Py_XDECREF(seek);
1416         Py_XDECREF(tell);
1417         if (block) wxPyEndBlockThreads(blocked);
1418         return NULL;
1419     }
1420
1421     if (block) wxPyEndBlockThreads(blocked);
1422     return new wxPyCBInputStream(read, seek, tell, block);
1423 }
1424
1425
1426 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1427     return wxPyCBInputStream::create(py, block);
1428 }
1429
1430 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1431     return new wxPyCBInputStream(*other);
1432 }
1433
1434 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1435     if (!PyObject_HasAttrString(py, name))
1436         return NULL;
1437     PyObject* o = PyObject_GetAttrString(py, name);
1438     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1439         Py_DECREF(o);
1440         return NULL;
1441     }
1442     return o;
1443 }
1444
1445
1446 wxFileOffset wxPyCBInputStream::GetLength() const {
1447     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1448     if (m_seek && m_tell) {
1449         wxFileOffset temp = self->OnSysTell();
1450         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1451         self->OnSysSeek(temp, wxFromStart);
1452         return ret;
1453     }
1454     else
1455         return wxInvalidOffset;
1456 }
1457
1458
1459 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1460     if (bufsize == 0)
1461         return 0;
1462
1463     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1464     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1465     PyObject* result = PyEval_CallObject(m_read, arglist);
1466     Py_DECREF(arglist);
1467
1468     size_t o = 0;
1469     if ((result != NULL) && PyString_Check(result)) {
1470         o = PyString_Size(result);
1471         if (o == 0)
1472             m_lasterror = wxSTREAM_EOF;
1473         if (o > bufsize)
1474             o = bufsize;
1475         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1476         Py_DECREF(result);
1477
1478     }
1479     else
1480         m_lasterror = wxSTREAM_READ_ERROR;
1481     wxPyEndBlockThreads(blocked);
1482     return o;
1483 }
1484
1485 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1486     m_lasterror = wxSTREAM_WRITE_ERROR;
1487     return 0;
1488 }
1489
1490
1491 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1492     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1493     PyObject* arglist = PyTuple_New(2);
1494
1495     if (sizeof(wxFileOffset) > sizeof(long))
1496         // wxFileOffset is a 64-bit value...
1497         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1498     else
1499         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1500
1501     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1502
1503
1504     PyObject* result = PyEval_CallObject(m_seek, arglist);
1505     Py_DECREF(arglist);
1506     Py_XDECREF(result);
1507     wxPyEndBlockThreads(blocked);
1508     return OnSysTell();
1509 }
1510
1511
1512 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1513     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1514     PyObject* arglist = Py_BuildValue("()");
1515     PyObject* result = PyEval_CallObject(m_tell, arglist);
1516     Py_DECREF(arglist);
1517     wxFileOffset o = 0;
1518     if (result != NULL) {
1519         if (PyLong_Check(result))
1520             o = PyLong_AsLongLong(result);
1521         else
1522             o = PyInt_AsLong(result);
1523         Py_DECREF(result);
1524     };
1525     wxPyEndBlockThreads(blocked);
1526     return o;
1527 }
1528
1529 //----------------------------------------------------------------------
1530
1531 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1532
1533 wxPyCallback::wxPyCallback(PyObject* func) {
1534     m_func = func;
1535     Py_INCREF(m_func);
1536 }
1537
1538 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1539     m_func = other.m_func;
1540     Py_INCREF(m_func);
1541 }
1542
1543 wxPyCallback::~wxPyCallback() {
1544     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1545     Py_DECREF(m_func);
1546     wxPyEndBlockThreads(blocked);
1547 }
1548
1549
1550 #define wxPy_PRECALLINIT     "_preCallInit"
1551 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1552
1553 // This function is used for all events destined for Python event handlers.
1554 void wxPyCallback::EventThunker(wxEvent& event) {
1555     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1556     PyObject*       func = cb->m_func;
1557     PyObject*       result;
1558     PyObject*       arg;
1559     PyObject*       tuple;
1560     bool            checkSkip = false;
1561
1562     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1563     wxString className = event.GetClassInfo()->GetClassName();
1564
1565     // If the event is one of these types then pass the original
1566     // event object instead of the one passed to us.
1567     if ( className == wxT("wxPyEvent") ) {
1568         arg =       ((wxPyEvent*)&event)->GetSelf();
1569         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1570     }
1571     else if ( className == wxT("wxPyCommandEvent") ) {
1572         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1573         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1574     }
1575     else {
1576         arg = wxPyConstructObject((void*)&event, className);
1577     }
1578
1579     if (!arg) {
1580         PyErr_Print();
1581     } else {
1582         // "intern" the pre/post method names to speed up the HasAttr
1583         static PyObject* s_preName  = NULL;
1584         static PyObject* s_postName = NULL;
1585         if (s_preName == NULL) {
1586             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1587             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1588         }
1589
1590         // Check if the event object needs some preinitialization
1591         if (PyObject_HasAttr(arg, s_preName)) {
1592             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1593             if ( result ) {
1594                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1595                 PyErr_Clear();       // Just in case...
1596             } else {
1597                 PyErr_Print();
1598             }
1599         }
1600
1601         // Call the event handler, passing the event object
1602         tuple = PyTuple_New(1);
1603         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1604         result = PyEval_CallObject(func, tuple);
1605         if ( result ) {
1606             Py_DECREF(result);   // result is ignored, but we still need to decref it
1607             PyErr_Clear();       // Just in case...
1608         } else {
1609             PyErr_Print();
1610         }
1611
1612         // Check if the event object needs some post cleanup
1613         if (PyObject_HasAttr(arg, s_postName)) {
1614             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1615             if ( result ) {
1616                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1617                 PyErr_Clear();       // Just in case...
1618             } else {
1619                 PyErr_Print();
1620             }
1621         }
1622
1623         if ( checkSkip ) {
1624             // if the event object was one of our special types and
1625             // it had been cloned, then we need to extract the Skipped
1626             // value from the original and set it in the clone.
1627             result = PyObject_CallMethod(arg, "GetSkipped", "");
1628             if ( result ) {
1629                 event.Skip(PyInt_AsLong(result));
1630                 Py_DECREF(result);
1631             } else {
1632                 PyErr_Print();
1633             }
1634         }
1635         Py_DECREF(tuple);
1636     }
1637     wxPyEndBlockThreads(blocked);
1638 }
1639
1640
1641 //----------------------------------------------------------------------
1642
1643 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1644       m_lastFound = NULL;
1645       m_self = other.m_self;
1646       m_class = other.m_class;
1647       if (m_self) {
1648           Py_INCREF(m_self);
1649           Py_INCREF(m_class);
1650       }
1651 }
1652
1653
1654 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1655     m_self = self;
1656     m_class = klass;
1657     m_incRef = incref;
1658     if (incref) {
1659         Py_INCREF(m_self);
1660         Py_INCREF(m_class);
1661     }
1662 }
1663
1664
1665 #if PYTHON_API_VERSION >= 1011
1666
1667 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1668 // in which the method was defined.  Starting with 2.2 it returns
1669 // "class that asked for the method" which seems totally bogus to me
1670 // but apprently it fixes some obscure problem waiting to happen in
1671 // Python.  Since the API was not documented Guido and the gang felt
1672 // safe in changing it.  Needless to say that totally screwed up the
1673 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1674 // code to find the class where the method is actually defined...
1675
1676 static
1677 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1678 {
1679     int i, n;
1680
1681     if (PyType_Check(klass)) {      // new style classes
1682         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1683         PyTypeObject* type = (PyTypeObject*)klass;
1684         PyObject *mro, *res, *base, *dict;
1685         /* Look in tp_dict of types in MRO */
1686         mro = type->tp_mro;
1687         assert(PyTuple_Check(mro));
1688         n = PyTuple_GET_SIZE(mro);
1689         for (i = 0; i < n; i++) {
1690             base = PyTuple_GET_ITEM(mro, i);
1691             if (PyClass_Check(base))
1692                 dict = ((PyClassObject *)base)->cl_dict;
1693             else {
1694                 assert(PyType_Check(base));
1695                 dict = ((PyTypeObject *)base)->tp_dict;
1696             }
1697             assert(dict && PyDict_Check(dict));
1698             res = PyDict_GetItem(dict, name);
1699             if (res != NULL)
1700                 return base;
1701         }
1702         return NULL;
1703     }
1704
1705     else if (PyClass_Check(klass)) { // old style classes
1706         // This code is borrowed/adapted from class_lookup in classobject.c
1707         PyClassObject* cp = (PyClassObject*)klass;
1708         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1709         if (value != NULL) {
1710             return (PyObject*)cp;
1711         }
1712         n = PyTuple_Size(cp->cl_bases);
1713         for (i = 0; i < n; i++) {
1714             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1715             PyObject *v = PyFindClassWithAttr(base, name);
1716             if (v != NULL)
1717                 return v;
1718         }
1719         return NULL;
1720     }
1721     return NULL;
1722 }
1723 #endif
1724
1725
1726 static
1727 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1728 {
1729     PyObject* mgc = PyMethod_GET_CLASS(method);
1730
1731 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1732     return mgc;
1733 #else                             // 2.2 and after, the hard way...
1734
1735     PyObject* nameo = PyString_FromString(name);
1736     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1737     Py_DECREF(nameo);
1738     return klass;
1739 #endif
1740 }
1741
1742
1743
1744 bool wxPyCallbackHelper::findCallback(const char* name) const {
1745     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1746     self->m_lastFound = NULL;
1747
1748     // If the object (m_self) has an attibute of the given name...
1749     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1750         PyObject *method, *klass;
1751         method = PyObject_GetAttrString(m_self, (char*)name);
1752
1753         // ...and if that attribute is a method, and if that method's class is
1754         // not from a base class...
1755         if (PyMethod_Check(method) &&
1756             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1757             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1758
1759             // ...then we'll save a pointer to the method so callCallback can call it.
1760             self->m_lastFound = method;
1761         }
1762         else {
1763             Py_DECREF(method);
1764         }
1765     }
1766     return m_lastFound != NULL;
1767 }
1768
1769
1770 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1771     PyObject*   result;
1772     int         retval = false;
1773
1774     result = callCallbackObj(argTuple);
1775     if (result) {                       // Assumes an integer return type...
1776         retval = PyInt_AsLong(result);
1777         Py_DECREF(result);
1778         PyErr_Clear();                  // forget about it if it's not...
1779     }
1780     return retval;
1781 }
1782
1783 // Invoke the Python callable object, returning the raw PyObject return
1784 // value.  Caller should DECREF the return value and also manage the GIL.
1785 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1786     PyObject* result;
1787
1788     // Save a copy of the pointer in case the callback generates another
1789     // callback.  In that case m_lastFound will have a different value when
1790     // it gets back here...
1791     PyObject* method = m_lastFound;
1792
1793     result = PyEval_CallObject(method, argTuple);
1794     Py_DECREF(argTuple);
1795     Py_DECREF(method);
1796     if (!result) {
1797         PyErr_Print();
1798     }
1799     return result;
1800 }
1801
1802
1803 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1804     cbh.setSelf(self, klass, incref);
1805 }
1806
1807 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1808     return cbh.findCallback(name);
1809 }
1810
1811 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1812     return cbh.callCallback(argTuple);
1813 }
1814
1815 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1816     return cbh.callCallbackObj(argTuple);
1817 }
1818
1819
1820 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1821     if (cbh->m_incRef) {
1822         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1823         Py_XDECREF(cbh->m_self);
1824         Py_XDECREF(cbh->m_class);
1825         wxPyEndBlockThreads(blocked);
1826     }
1827 }
1828
1829 //---------------------------------------------------------------------------
1830 //---------------------------------------------------------------------------
1831 // These event classes can be derived from in Python and passed through the event
1832 // system without losing anything.  They do this by keeping a reference to
1833 // themselves and some special case handling in wxPyCallback::EventThunker.
1834
1835
1836 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1837     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1838     //Py_INCREF(m_self);        //      circular loops...
1839     m_cloned = false;
1840 }
1841
1842 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1843     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1844     if (m_cloned)
1845         Py_DECREF(m_self);
1846     wxPyEndBlockThreads(blocked);
1847 }
1848
1849 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1850     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1851     if (m_cloned)
1852         Py_DECREF(m_self);
1853     m_self = self;
1854     if (clone) {
1855         Py_INCREF(m_self);
1856         m_cloned = true;
1857     }
1858     wxPyEndBlockThreads(blocked);
1859 }
1860
1861 PyObject* wxPyEvtSelfRef::GetSelf() const {
1862     Py_INCREF(m_self);
1863     return m_self;
1864 }
1865
1866
1867 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1868 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1869
1870
1871 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1872     : wxEvent(winid, commandType) {
1873 }
1874
1875
1876 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1877     : wxEvent(evt)
1878 {
1879     SetSelf(evt.m_self, true);
1880 }
1881
1882
1883 wxPyEvent::~wxPyEvent() {
1884 }
1885
1886
1887 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1888     : wxCommandEvent(commandType, id) {
1889 }
1890
1891
1892 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1893     : wxCommandEvent(evt)
1894 {
1895     SetSelf(evt.m_self, true);
1896 }
1897
1898
1899 wxPyCommandEvent::~wxPyCommandEvent() {
1900 }
1901
1902
1903
1904
1905
1906 //---------------------------------------------------------------------------
1907 //---------------------------------------------------------------------------
1908 // Convert a wxList to a Python List, only works for lists of wxObjects
1909
1910 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1911     wxList*     list = (wxList*)listbase;  // this is probably bad...
1912     PyObject*   pyList;
1913     PyObject*   pyObj;
1914     wxObject*   wxObj;
1915     wxNode*     node = list->GetFirst();
1916
1917     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1918     pyList = PyList_New(0);
1919     while (node) {
1920         wxObj = node->GetData();
1921         pyObj = wxPyMake_wxObject(wxObj,false);
1922         PyList_Append(pyList, pyObj);
1923         node = node->GetNext();
1924     }
1925     wxPyEndBlockThreads(blocked);
1926     return pyList;
1927 }
1928
1929 //----------------------------------------------------------------------
1930
1931 long wxPyGetWinHandle(wxWindow* win) {
1932
1933 #ifdef __WXMSW__
1934     return (long)win->GetHandle();
1935 #endif
1936
1937 #if defined(__WXGTK__) || defined(__WXX11)
1938     return (long)GetXWindow(win);
1939 #endif
1940
1941 #ifdef __WXMAC__
1942     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1943     return (long)win->GetHandle();
1944 #endif
1945
1946     return 0;
1947 }
1948
1949 //----------------------------------------------------------------------
1950 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1951 // included in every file over and over again...
1952
1953 wxString* wxString_in_helper(PyObject* source) {
1954     wxString* target = NULL;
1955
1956     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1957         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1958         return NULL;
1959     }
1960 #if wxUSE_UNICODE
1961     PyObject* uni = source;
1962     if (PyString_Check(source)) {
1963         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1964         if (PyErr_Occurred()) return NULL;
1965     }
1966     target = new wxString();
1967     size_t len = PyUnicode_GET_SIZE(uni);
1968     if (len) {
1969         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1970         target->UngetWriteBuf(len);
1971     }
1972
1973     if (PyString_Check(source))
1974         Py_DECREF(uni);
1975 #else
1976     // Convert to a string object if it isn't already, then to wxString
1977     PyObject* str = source;
1978     if (PyUnicode_Check(source)) {
1979         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1980         if (PyErr_Occurred()) return NULL;
1981     }
1982     else if (!PyString_Check(source)) {
1983         str = PyObject_Str(source);
1984         if (PyErr_Occurred()) return NULL;
1985     }
1986     char* tmpPtr; int tmpSize;
1987     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1988     target = new wxString(tmpPtr, tmpSize);
1989
1990     if (!PyString_Check(source))
1991         Py_DECREF(str);
1992 #endif // wxUSE_UNICODE
1993
1994     return target;
1995 }
1996
1997
1998 // Similar to above except doesn't use "new" and doesn't set an exception
1999 wxString Py2wxString(PyObject* source)
2000 {
2001     wxString target;
2002
2003 #if wxUSE_UNICODE
2004     // Convert to a unicode object, if not already, then to a wxString
2005     PyObject* uni = source;
2006     if (!PyUnicode_Check(source)) {
2007         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
2008         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
2009     }
2010     size_t len = PyUnicode_GET_SIZE(uni);
2011     if (len) {
2012         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
2013         target.UngetWriteBuf();
2014     }
2015
2016     if (!PyUnicode_Check(source))
2017         Py_DECREF(uni);
2018 #else
2019     // Convert to a string object if it isn't already, then to wxString
2020     PyObject* str = source;
2021     if (PyUnicode_Check(source)) {
2022         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
2023         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2024     }
2025     else if (!PyString_Check(source)) {
2026         str = PyObject_Str(source);
2027         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2028     }
2029     char* tmpPtr; int tmpSize;
2030     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
2031     target = wxString(tmpPtr, tmpSize);
2032
2033     if (!PyString_Check(source))
2034         Py_DECREF(str);
2035 #endif // wxUSE_UNICODE
2036
2037     return target;
2038 }
2039
2040
2041 // Make either a Python String or Unicode object, depending on build mode
2042 PyObject* wx2PyString(const wxString& src)
2043 {
2044     PyObject* str;
2045 #if wxUSE_UNICODE
2046     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
2047 #else
2048     str = PyString_FromStringAndSize(src.c_str(), src.Len());
2049 #endif
2050     return str;
2051 }
2052
2053
2054
2055 void wxSetDefaultPyEncoding(const char* encoding)
2056 {
2057     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
2058 }
2059
2060 const char* wxGetDefaultPyEncoding()
2061 {
2062     return wxPyDefaultEncoding;
2063 }
2064
2065 //----------------------------------------------------------------------
2066
2067
2068 byte* byte_LIST_helper(PyObject* source) {
2069     if (!PyList_Check(source)) {
2070         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2071         return NULL;
2072     }
2073     int count = PyList_Size(source);
2074     byte* temp = new byte[count];
2075     if (! temp) {
2076         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2077         return NULL;
2078     }
2079     for (int x=0; x<count; x++) {
2080         PyObject* o = PyList_GetItem(source, x);
2081         if (! PyInt_Check(o)) {
2082             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2083             return NULL;
2084         }
2085         temp[x] = (byte)PyInt_AsLong(o);
2086     }
2087     return temp;
2088 }
2089
2090
2091 int* int_LIST_helper(PyObject* source) {
2092     if (!PyList_Check(source)) {
2093         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2094         return NULL;
2095     }
2096     int count = PyList_Size(source);
2097     int* temp = new int[count];
2098     if (! temp) {
2099         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2100         return NULL;
2101     }
2102     for (int x=0; x<count; x++) {
2103         PyObject* o = PyList_GetItem(source, x);
2104         if (! PyInt_Check(o)) {
2105             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2106             return NULL;
2107         }
2108         temp[x] = PyInt_AsLong(o);
2109     }
2110     return temp;
2111 }
2112
2113
2114 long* long_LIST_helper(PyObject* source) {
2115     if (!PyList_Check(source)) {
2116         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2117         return NULL;
2118     }
2119     int count = PyList_Size(source);
2120     long* temp = new long[count];
2121     if (! temp) {
2122         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2123         return NULL;
2124     }
2125     for (int x=0; x<count; x++) {
2126         PyObject* o = PyList_GetItem(source, x);
2127         if (! PyInt_Check(o)) {
2128             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2129             return NULL;
2130         }
2131         temp[x] = PyInt_AsLong(o);
2132     }
2133     return temp;
2134 }
2135
2136
2137 char** string_LIST_helper(PyObject* source) {
2138     if (!PyList_Check(source)) {
2139         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2140         return NULL;
2141     }
2142     int count = PyList_Size(source);
2143     char** temp = new char*[count];
2144     if (! temp) {
2145         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2146         return NULL;
2147     }
2148     for (int x=0; x<count; x++) {
2149         PyObject* o = PyList_GetItem(source, x);
2150         if (! PyString_Check(o)) {
2151             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2152             return NULL;
2153         }
2154         temp[x] = PyString_AsString(o);
2155     }
2156     return temp;
2157 }
2158
2159 //--------------------------------
2160 // Part of patch from Tim Hochberg
2161 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2162     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2163         point->x = PyInt_AS_LONG(o1);
2164         point->y = PyInt_AS_LONG(o2);
2165         return true;
2166     }
2167     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2168         point->x = (int)PyFloat_AS_DOUBLE(o1);
2169         point->y = (int)PyFloat_AS_DOUBLE(o2);
2170         return true;
2171     }
2172     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2173         // Disallow instances because they can cause havok
2174         return false;
2175     }
2176     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2177         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2178         point->x = PyInt_AsLong(o1);
2179         point->y = PyInt_AsLong(o2);
2180         return true;
2181     }
2182     return false;
2183 }
2184
2185
2186 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2187     // Putting all of the declarations here allows
2188     // us to put the error handling all in one place.
2189     int x;
2190     wxPoint* temp;
2191     PyObject *o, *o1, *o2;
2192     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2193
2194     if (!PySequence_Check(source)) {
2195         goto error0;
2196     }
2197
2198     // The length of the sequence is returned in count.
2199     *count = PySequence_Length(source);
2200     if (*count < 0) {
2201         goto error0;
2202     }
2203
2204     temp = new wxPoint[*count];
2205     if (!temp) {
2206         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2207         return NULL;
2208     }
2209     for (x=0; x<*count; x++) {
2210         // Get an item: try fast way first.
2211         if (isFast) {
2212             o = PySequence_Fast_GET_ITEM(source, x);
2213         }
2214         else {
2215             o = PySequence_GetItem(source, x);
2216             if (o == NULL) {
2217                 goto error1;
2218             }
2219         }
2220
2221         // Convert o to wxPoint.
2222         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2223             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2224             o1 = PySequence_Fast_GET_ITEM(o, 0);
2225             o2 = PySequence_Fast_GET_ITEM(o, 1);
2226             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2227                 goto error2;
2228             }
2229         }
2230         else if (wxPySwigInstance_Check(o)) {
2231             wxPoint* pt;
2232             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2233                 goto error2;
2234             }
2235             temp[x] = *pt;
2236         }
2237         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2238             o1 = PySequence_GetItem(o, 0);
2239             o2 = PySequence_GetItem(o, 1);
2240             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2241                 goto error3;
2242             }
2243             Py_DECREF(o1);
2244             Py_DECREF(o2);
2245         }
2246         else {
2247             goto error2;
2248         }
2249         // Clean up.
2250         if (!isFast)
2251             Py_DECREF(o);
2252     }
2253     return temp;
2254
2255 error3:
2256     Py_DECREF(o1);
2257     Py_DECREF(o2);
2258 error2:
2259     if (!isFast)
2260         Py_DECREF(o);
2261 error1:
2262     delete [] temp;
2263 error0:
2264     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2265     return NULL;
2266 }
2267 // end of patch
2268 //------------------------------
2269
2270
2271 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2272     if (!PyList_Check(source)) {
2273         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2274         return NULL;
2275     }
2276     int count = PyList_Size(source);
2277     wxBitmap** temp = new wxBitmap*[count];
2278     if (! temp) {
2279         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2280         return NULL;
2281     }
2282     for (int x=0; x<count; x++) {
2283         PyObject* o = PyList_GetItem(source, x);
2284         if (wxPySwigInstance_Check(o)) {
2285             wxBitmap*    pt;
2286             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2287                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2288                 return NULL;
2289             }
2290             temp[x] = pt;
2291         }
2292         else {
2293             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2294             return NULL;
2295         }
2296     }
2297     return temp;
2298 }
2299
2300
2301
2302 wxString* wxString_LIST_helper(PyObject* source) {
2303     if (!PyList_Check(source)) {
2304         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2305         return NULL;
2306     }
2307     int count = PyList_Size(source);
2308     wxString* temp = new wxString[count];
2309     if (! temp) {
2310         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2311         return NULL;
2312     }
2313     for (int x=0; x<count; x++) {
2314         PyObject* o = PyList_GetItem(source, x);
2315 #if PYTHON_API_VERSION >= 1009
2316         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2317             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2318             return NULL;
2319         }
2320 #else
2321         if (! PyString_Check(o)) {
2322             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2323             return NULL;
2324         }
2325 #endif
2326
2327         wxString* pStr = wxString_in_helper(o);
2328         temp[x] = *pStr;
2329         delete pStr;
2330     }
2331     return temp;
2332 }
2333
2334
2335 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2336     if (!PyList_Check(source)) {
2337         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2338         return NULL;
2339     }
2340     int count                = PyList_Size(source);
2341     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2342     if (! temp) {
2343         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2344         return NULL;
2345     }
2346     for (int x=0; x<count; x++) {
2347         PyObject* o = PyList_GetItem(source, x);
2348         if (wxPySwigInstance_Check(o)) {
2349             wxAcceleratorEntry* ae;
2350             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2351                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2352                 return NULL;
2353             }
2354             temp[x] = *ae;
2355         }
2356         else if (PyTuple_Check(o)) {
2357             PyObject* o1 = PyTuple_GetItem(o, 0);
2358             PyObject* o2 = PyTuple_GetItem(o, 1);
2359             PyObject* o3 = PyTuple_GetItem(o, 2);
2360             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2361         }
2362         else {
2363             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2364             return NULL;
2365         }
2366     }
2367     return temp;
2368 }
2369
2370
2371 wxPen** wxPen_LIST_helper(PyObject* source) {
2372     if (!PyList_Check(source)) {
2373         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2374         return NULL;
2375     }
2376     int count = PyList_Size(source);
2377     wxPen** temp = new wxPen*[count];
2378     if (!temp) {
2379         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2380         return NULL;
2381     }
2382     for (int x=0; x<count; x++) {
2383         PyObject* o = PyList_GetItem(source, x);
2384         if (wxPySwigInstance_Check(o)) {
2385             wxPen*  pt;
2386             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2387                 delete temp;
2388                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2389                 return NULL;
2390             }
2391             temp[x] = pt;
2392         }
2393         else {
2394             delete temp;
2395             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2396             return NULL;
2397         }
2398     }
2399     return temp;
2400 }
2401
2402
2403 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2404     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2405     PyObject *o1, *o2;
2406
2407     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2408         return false;
2409
2410     if (isFast) {
2411         o1 = PySequence_Fast_GET_ITEM(source, 0);
2412         o2 = PySequence_Fast_GET_ITEM(source, 1);
2413     }
2414     else {
2415         o1 = PySequence_GetItem(source, 0);
2416         o2 = PySequence_GetItem(source, 1);
2417     }
2418
2419     *i1 = PyInt_AsLong(o1);
2420     *i2 = PyInt_AsLong(o2);
2421
2422     if (! isFast) {
2423         Py_DECREF(o1);
2424         Py_DECREF(o2);
2425     }
2426     return true;
2427 }
2428
2429
2430 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2431     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2432     PyObject *o1, *o2, *o3, *o4;
2433
2434     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2435         return false;
2436
2437     if (isFast) {
2438         o1 = PySequence_Fast_GET_ITEM(source, 0);
2439         o2 = PySequence_Fast_GET_ITEM(source, 1);
2440         o3 = PySequence_Fast_GET_ITEM(source, 2);
2441         o4 = PySequence_Fast_GET_ITEM(source, 3);
2442     }
2443     else {
2444         o1 = PySequence_GetItem(source, 0);
2445         o2 = PySequence_GetItem(source, 1);
2446         o3 = PySequence_GetItem(source, 2);
2447         o4 = PySequence_GetItem(source, 3);
2448     }
2449
2450     *i1 = PyInt_AsLong(o1);
2451     *i2 = PyInt_AsLong(o2);
2452     *i3 = PyInt_AsLong(o3);
2453     *i4 = PyInt_AsLong(o4);
2454
2455     if (! isFast) {
2456         Py_DECREF(o1);
2457         Py_DECREF(o2);
2458         Py_DECREF(o3);
2459         Py_DECREF(o4);
2460     }
2461     return true;
2462 }
2463
2464
2465 //----------------------------------------------------------------------
2466
2467 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2468 {
2469     void* ptr;
2470
2471     if (wxPySwigInstance_Check(source) &&
2472         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2473         return true;
2474
2475     PyErr_Clear();
2476     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2477         return true;
2478
2479     return false;
2480 }
2481
2482 bool wxSize_helper(PyObject* source, wxSize** obj)
2483 {
2484     if (source == Py_None) {
2485         **obj = wxSize(-1,-1);
2486         return true;
2487     }
2488     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2489 }
2490
2491
2492 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2493 {
2494     if (source == Py_None) {
2495         **obj = wxPoint(-1,-1);
2496         return true;
2497     }
2498     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2499 }
2500
2501
2502
2503 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2504
2505     if (source == Py_None) {
2506         **obj = wxRealPoint(-1,-1);
2507         return true;
2508     }
2509
2510     // If source is an object instance then it may already be the right type
2511     if (wxPySwigInstance_Check(source)) {
2512         wxRealPoint* ptr;
2513         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2514             goto error;
2515         *obj = ptr;
2516         return true;
2517     }
2518     // otherwise a 2-tuple of floats is expected
2519     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2520         PyObject* o1 = PySequence_GetItem(source, 0);
2521         PyObject* o2 = PySequence_GetItem(source, 1);
2522         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2523             Py_DECREF(o1);
2524             Py_DECREF(o2);
2525             goto error;
2526         }
2527         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2528         Py_DECREF(o1);
2529         Py_DECREF(o2);
2530         return true;
2531     }
2532
2533  error:
2534     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2535     return false;
2536 }
2537
2538
2539
2540 bool wxRect_helper(PyObject* source, wxRect** obj) {
2541
2542     if (source == Py_None) {
2543         **obj = wxRect(-1,-1,-1,-1);
2544         return true;
2545     }
2546
2547     // If source is an object instance then it may already be the right type
2548     if (wxPySwigInstance_Check(source)) {
2549         wxRect* ptr;
2550         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2551             goto error;
2552         *obj = ptr;
2553         return true;
2554     }
2555     // otherwise a 4-tuple of integers is expected
2556     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2557         PyObject* o1 = PySequence_GetItem(source, 0);
2558         PyObject* o2 = PySequence_GetItem(source, 1);
2559         PyObject* o3 = PySequence_GetItem(source, 2);
2560         PyObject* o4 = PySequence_GetItem(source, 3);
2561         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2562             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2563             Py_DECREF(o1);
2564             Py_DECREF(o2);
2565             Py_DECREF(o3);
2566             Py_DECREF(o4);
2567             goto error;
2568         }
2569         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2570                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2571         Py_DECREF(o1);
2572         Py_DECREF(o2);
2573         Py_DECREF(o3);
2574         Py_DECREF(o4);
2575         return true;
2576     }
2577
2578  error:
2579     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2580     return false;
2581 }
2582
2583
2584
2585 bool wxColour_helper(PyObject* source, wxColour** obj) {
2586
2587     if (source == Py_None) {
2588         **obj = wxNullColour;
2589         return true;
2590     }
2591
2592     // If source is an object instance then it may already be the right type
2593     if (wxPySwigInstance_Check(source)) {
2594         wxColour* ptr;
2595         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2596             goto error;
2597         *obj = ptr;
2598         return true;
2599     }
2600     // otherwise check for a string
2601     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2602         wxString spec = Py2wxString(source);
2603         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2604             long red, green, blue;
2605             red = green = blue = 0;
2606             spec.Mid(1,2).ToLong(&red,   16);
2607             spec.Mid(3,2).ToLong(&green, 16);
2608             spec.Mid(5,2).ToLong(&blue,  16);
2609
2610             **obj = wxColour(red, green, blue);
2611             return true;
2612         }
2613         else {                                       // it's a colour name
2614             **obj = wxColour(spec);
2615             return true;
2616         }
2617     }
2618     // last chance: 3-tuple of integers is expected
2619     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2620         PyObject* o1 = PySequence_GetItem(source, 0);
2621         PyObject* o2 = PySequence_GetItem(source, 1);
2622         PyObject* o3 = PySequence_GetItem(source, 2);
2623         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2624             Py_DECREF(o1);
2625             Py_DECREF(o2);
2626             Py_DECREF(o3);
2627             goto error;
2628         }
2629         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2630         Py_DECREF(o1);
2631         Py_DECREF(o2);
2632         Py_DECREF(o3);
2633         return true;
2634     }
2635
2636  error:
2637     PyErr_SetString(PyExc_TypeError,
2638                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2639     return false;
2640 }
2641
2642
2643 bool wxColour_typecheck(PyObject* source) {
2644
2645     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2646         return true;
2647
2648     if (PyString_Check(source) || PyUnicode_Check(source))
2649         return true;
2650
2651     return false;
2652 }
2653
2654
2655
2656 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2657
2658     if (source == Py_None) {
2659         **obj = wxPoint2D(-1,-1);
2660         return true;
2661     }
2662
2663     // If source is an object instance then it may already be the right type
2664     if (wxPySwigInstance_Check(source)) {
2665         wxPoint2D* ptr;
2666         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2667             goto error;
2668         *obj = ptr;
2669         return true;
2670     }
2671     // otherwise a length-2 sequence of floats is expected
2672     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2673         PyObject* o1 = PySequence_GetItem(source, 0);
2674         PyObject* o2 = PySequence_GetItem(source, 1);
2675         // This should really check for floats, not numbers -- but that would break code.
2676         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2677             Py_DECREF(o1);
2678             Py_DECREF(o2);
2679             goto error;
2680         }
2681         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2682         Py_DECREF(o1);
2683         Py_DECREF(o2);
2684         return true;
2685     }
2686  error:
2687     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2688     return false;
2689 }
2690
2691
2692 //----------------------------------------------------------------------
2693
2694 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2695
2696     PyObject* list = PyList_New(0);
2697     for (size_t i=0; i < arr.GetCount(); i++) {
2698 #if wxUSE_UNICODE
2699         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2700 #else
2701         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2702 #endif
2703         PyList_Append(list, str);
2704         Py_DECREF(str);
2705     }
2706     return list;
2707 }
2708
2709
2710 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2711
2712     PyObject* list = PyList_New(0);
2713     for (size_t i=0; i < arr.GetCount(); i++) {
2714         PyObject* number = PyInt_FromLong(arr[i]);
2715         PyList_Append(list, number);
2716         Py_DECREF(number);
2717     }
2718     return list;
2719 }
2720
2721
2722 //----------------------------------------------------------------------
2723 //----------------------------------------------------------------------
2724
2725
2726
2727